Reconciling the CAST and PVLAS Results

Journal Article · Fri Feb 02 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.050402· OSTI ID:20955405

Mohapatra, R N ^[1]; Nasri, Salah ^[2]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)

The PVLAS experiment has recently claimed evidence for an axionlike particle in the milli-electron-volt mass range with a coupling to two photons that appears to be in contradiction with the negative results of the CAST experiment searching for solar axions. The simple axion interpretation of these two experimental results is therefore untenable and it has posed a challenge for theory. We propose a possible way to reconcile these two results by postulating the existence of an ultralight pseudoscalar particle interacting with two photons and a scalar boson and the existence of a low scale phase transition in the theory.

• OSTI ID: 20955405
• Journal Information: Physical Review Letters, Vol. 98, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.98.050402; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIONS
MASS
MILLI EV RANGE
PARTICLE IDENTIFICATION
PHASE TRANSFORMATIONS
PHOTONS